package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.dao.SpuInfoDao;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;


@Service("spuInfoService")
@Slf4j
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    final
    SpuInfoDescService spuInfoDescService;

    final
    SpuImagesService imagesService;

    final
    AttrService attrService;

    final
    ProductAttrValueService attrValueService;

    final
    SkuInfoService skuInfoService;

    final
    SkuImagesService skuImagesService;

    final
    SkuSaleAttrValueService skuSaleAttrValueService;

    final
    CouponFeignService couponFeignService;

    final
    BrandService brandService;

    final
    CategoryService categoryService;

    final
    WareFeignService wareFeignService;

    final
    SearchFeignService searchFeignService;

    public SpuInfoServiceImpl(SkuInfoService skuInfoService, SpuInfoDescService spuInfoDescService,
                              SpuImagesService imagesService, SearchFeignService searchFeignService,
                              AttrService attrService, ProductAttrValueService attrValueService,
                              SkuImagesService skuImagesService, SkuSaleAttrValueService skuSaleAttrValueService,
                              CouponFeignService couponFeignService, BrandService brandService,
                              CategoryService categoryService, WareFeignService wareFeignService) {
        this.skuInfoService = skuInfoService;
        this.spuInfoDescService = spuInfoDescService;
        this.imagesService = imagesService;
        this.searchFeignService = searchFeignService;
        this.attrService = attrService;
        this.attrValueService = attrValueService;
        this.skuImagesService = skuImagesService;
        this.skuSaleAttrValueService = skuSaleAttrValueService;
        this.couponFeignService = couponFeignService;
        this.brandService = brandService;
        this.categoryService = categoryService;
        this.wareFeignService = wareFeignService;
    }

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional(propagation = Propagation.REQUIRES_NEW, rollbackFor = {Exception.class})
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {

        //1、保存spu基本信息 pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo,infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);

        //2、保存Spu的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",",decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3、保存spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        imagesService.saveImages(infoEntity.getId(),images);

        //4、保存spu的规格参数;pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(attr.getAttrId());
            AttrEntity id = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(id.getAttrName());
            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(infoEntity.getId());

            return valueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);

        //5、保存spu的积分信息；gulimall_sms->sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds,spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if(r.getCode() != 0){
            log.error("远程保存spu积分信息失败");
        }

        //5、保存当前spu对应的所有sku信息；
        List<Skus> skus = vo.getSkus();
        if(skus!=null && skus.size()>0){
            skus.forEach(item->{
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if(image.getDefaultImg() == 1){
                        defaultImg = image.getImgUrl();
                    }
                }
                //    private String skuName;
                //    private BigDecimal price;
                //    private String skuTitle;
                //    private String skuSubtitle;
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item,skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                //5.1）、sku的基本信息；pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();

                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity->{
                    //返回true就是需要，false就是剔除
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                //5.2）、sku的图片信息；pms_sku_image
                skuImagesService.saveBatch(imagesEntities);
                //TODO 没有图片路径的无需保存

                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);

                    return attrValueEntity;
                }).collect(Collectors.toList());
                //5.3）、sku的销售属性信息：pms_sku_sale_attr_value
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                // //5.4）、sku的优惠、满减等信息；gulimall_sms->sms_sku_ladder\sms_sku_full_reduction\sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item,skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if(skuReductionTo.getFullCount() >0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1){
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if(r1.getCode() != 0){
                        log.error("远程保存sku优惠信息失败");
                    }
                }
            });
        }
    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {

        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();

        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("id",key).or().like("spu_name",key);
            });
        }
        // status=1 and (id=1 or spu_name like xxx)
        String status = (String) params.get("status");
        if(!StringUtils.isEmpty(status)){
            wrapper.eq("publish_status",status);
        }

        String brandId = (String) params.get("brandId");
        if(!StringUtils.isEmpty(brandId)&&!"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }

        String catelogId = (String) params.get("catelogId");
        if(!StringUtils.isEmpty(catelogId)&&!"0".equalsIgnoreCase(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }

        /**
         * status: 2
         * key:
         * brandId: 9
         * catelogId: 225
         */

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

	@Override
	public void up(Long spuId) {

        // 1.查出当前supId对应的所有sku信息，品牌的名字
        List<SkuInfoEntity> skuInfoEntityList = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skuInfoEntityList.stream().map(skuInfoEntity -> {
            return skuInfoEntity.getSkuId();
        }).collect(Collectors.toList());

        // TODO 4.查询当前sku的所有规格属性
        List<ProductAttrValueEntity> productAttrValueEntityList = attrValueService.baseAttrlistforspu(spuId);

        List<Long> attrIds = productAttrValueEntityList.stream()
                .map(ProductAttrValueEntity::getAttrId)
                .collect(Collectors.toList());

        // 在指定的所有属性集合里面，查询出检索属性
        List<Long> searchAttrIds = attrService.selectSearchAttrs(attrIds);

        Set<Long> idSet = new HashSet<>(searchAttrIds);

        List<SkuEsModel.Attrs> attrsList = productAttrValueEntityList.stream().filter(productAttrValueEntity -> {
            return idSet.contains(productAttrValueEntity.getAttrId());
        }).map(productAttrValueEntity -> {
            SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(productAttrValueEntity, attrs1);
            return attrs1;
        }).collect(Collectors.toList());

        // TODO 1.发送远程调用，库存系统查询是否有库存
        Map<Long, Boolean> stockMap = null;
        try{
            R r = wareFeignService.getSkusHasStock(skuIdList);
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>(){};

            stockMap = r.getData(typeReference).stream().collect(
                    Collectors.toMap(SkuHasStockVo::getSkuId, SkuHasStockVo::getHasStock)
            );

        }catch (Exception e){
            log.error("库存服务查询异常，原因{}",e);
        }


        // 2.封装每个sku的信息 遍历每条数据
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProdcuts = skuInfoEntityList.stream().map(skuInfoEntity -> {
            // 组装需要的数据
            SkuEsModel skuEsModel = new SkuEsModel();

            skuEsModel.setSkuPrice(skuInfoEntity.getPrice());
            skuEsModel.setSkuImg(skuInfoEntity.getSkuDefaultImg());
            // 设置库存信息
            if (null == finalStockMap) {
                skuEsModel.setHasStock(true);
            }
            skuEsModel.setHasStock(finalStockMap.get(skuInfoEntity.getSkuId()));

            // TODO 2.热度评分
            skuEsModel.setHotScore(0L);

            // TODO 3.查询品牌和分类的名字信息
            CategoryEntity categoryEntity = categoryService.getById(skuInfoEntity.getCatalogId());
            skuEsModel.setCatalogName(categoryEntity.getName());

            BrandEntity brandEntity = brandService.getById(skuInfoEntity.getBrandId());
            skuEsModel.setBrandName(brandEntity.getName());
            skuEsModel.setBrandImg(brandEntity.getLogo());

            // 设置检索属性
            skuEsModel.setAttrs(attrsList);

            BeanUtils.copyProperties(skuInfoEntity,skuEsModel);

            return skuEsModel;
        }).collect(Collectors.toList());


        // TODO 5.将数据发送给es进行保存 gulimall-search
        R r = searchFeignService.productStatusUp(upProdcuts);
        if(r.getCode() == 0){
            // 远程调用成功
            // TODO 6、修改当前spu状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else{
            // 远程调用失败
            // TODO 7、存在重复调用？ 专业话叫做接口幂等性 调用失败重试机制？
            // Feign 调用流程
            // 1.构造请求数据，将对象转为json
            // 2.发送请求进行执行（执行成功会解码响应数据）
            // 3.执行请求会有重试机制，只不过我们现在还没有达到触发条件


        }
    }

    /**
     * 根据skuId查询spu的信息
     * @param skuId
     * @return
     */
    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {

        //先查询sku表里的数据
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);

        //获得spuId
        Long spuId = skuInfoEntity.getSpuId();

        //再通过spuId查询spuInfo信息表里的数据
        SpuInfoEntity spuInfoEntity = this.baseMapper.selectById(spuId);

        //查询品牌表的数据获取品牌名
        BrandEntity brandEntity = brandService.getById(spuInfoEntity.getBrandId());
        spuInfoEntity.setBrandName(brandEntity.getName());

        return spuInfoEntity;
    }

}